﻿/*    
    OpenMheg - A free MHEG-5 library
    Copyright (C) 2008 Dharmesh Malam

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.Text;
using ASN1Decoder.Builders.Nodes;
using System.Drawing;
using Exceptions;
using Core.Model.Data.Generics;
using Core.Model.Groups;
using Core.Model;

namespace ASN1Decoder.Builders
{
    internal class ColourBuilder
    {
        internal static GenericColour Build(ASN1Node node, Group group)
        {
            GenericColour colour = null;

            if (node is OctetStringNode)
            {
                colour = new GenericColour( new Colour(node.StringValue));


            }
            else if (node is TaggedNode)
            {

                TaggedNode n = (TaggedNode) node;
                TaggedNode e;

                if (n.Tag == ASN1ContextCodes.C_NEW_COLOUR_INDEX)
                    throw new OpenMhegException("No CLUT defined in 1.06");
                else if (n.Tag == ASN1ContextCodes.C_NEW_ABSOLUTE_COLOUR)
                {
                    
                    if ((e = n[ASN1ContextCodes.C_INDIRECTREFERENCE]) != null)
                        colour = new GenericColour(ObjectRefBuilder.Build(e.First, group));
                    else
                        colour = new GenericColour(new Colour(n.First.StringValue));
                }
                else
                    throw new OpenMhegException("Unknown Colour");

            }
            else throw new OpenMhegException("Unexpected node");

            return colour;

        }

      
    }
}

